Quote:
Originally Posted by dkr
Hi All,
Tomorrow, I am changing my transmission fluid in my 1984 300D and planning to use fully synthetic ATF. I'm thinking about extending the interval between transmission flushes to 45,000 miles. Is anyone else extending their service intervals with synthetic? It would also be interesting to see if there is any real-life data on the topic of putting synthetic in an older transmission and how long it lasts.
Dkr.
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I am big fan of extending drain intervals. I do it 40-45K max.
I don't have any scientific data, but it runs fine and that's good for me.
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